Memcached::get
(PECL memcached >= 0.1.0)
Memcached::get — Retrieve an item
Description
public mixed Memcached::get ( string $key [, callable $cache_cb [, int $$flags ]] ) Memcached::get() returns the item that was previously stored under the key. If the item is found and for flags is given Memcached::GET_EXTENDED, it will return the CAS token value for the item. See Memcached::cas() for how to use CAS tokens. Read-through caching callback may be specified via cache_cb parameter.
Parameters
key
The key of the item to retrieve.
cache_cb
Read-through caching callback or NULL.
flags
Flags to control the returned result. When value of Memcached::GET_EXTENDED is given will return the CAS token.
Return Values
Returns the value stored in the cache or FALSE otherwise. The Memcached::getResultCode() will return Memcached::RES_NOTFOUND if the key does not exist.
Examples
Example #1 Memcached::get() example #1
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$m->set('foo', 100);
var_dump($m->get('foo'));
?>The above example will output:
int(100)Example #2 Memcached::get() example #2
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
if (!($ip = $m->get('ip_block'))) {
if ($m->getResultCode() == Memcached::RES_NOTFOUND) {
$ip = array();
$m->set('ip_block', $ip);
} else {
/* log error */
/* ... */
}
}
?>Changelog
Version | Description |
|---|---|
3.0.0 | The &cas_token parameter was removed. Instead flags was added and when it is given the value of Memcached::GET_EXTENDED it will ensure the CAS token to be fetched. |
See Also
- Memcached::getByKey() - Retrieve an item from a specific server
- Memcached::getMulti() - Retrieve multiple items
- Memcached::getDelayed() - Request multiple items
← Memcached::flush
Memcached::getAllKeys →
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